Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e513d039fbb5595fa6f586dea5e607faa109489372c7a9b23bde909de1ca1c8' 
  AND token = 'Akl61pHK8lmS1jYvuVecoiV+tu393tHdxt02kV6N7a0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}